The micro-flotation findings revealed that BN returned the stronger collecting power and higher selectivity than isobutyl xanthate during flotation separation of galena from sphalerite, and achieved their effective separation at low alkaline conditions (pH ∼ …
The results of micro-flotation tests proved that HA was an efficient and selective sphalerite depressant, which could depress sphalerite but hardly influence the flotation of galena to achieve desirable separation results using sodium isobutyl xanthate as …
Flotation has been extensively used to separate galena and sphalerite. Herein, a reagent scheme comprising aerofloat collectors and Zn 2+ and SO 32− …
Since the most common Pb-Zn selective flotation method (Sheridan–Griswold method) sequentially recovers lead and zinc at alkali conditions, the monomineralic flotation tests for galena, sphalerite, and pyrite were performed at pH 9 and 11, which are commonly used pH levels in the industry .
Galena and sphalerite are usually separated by flotation. However, they coexist closely in nature separating them is difficult without a depressant in the flotation process [5]. At present, the separation of galena and sphalerite is usually achieved through sphalerite depression and galena flotation [6]. The depressants used for sphalerite ...
Dependence of flotation (solid line), ~ potential (dotted line) and sedimentation (dashed line) of sphalerite on pH in the presence of KHX (triangle), ATP (+) and without collector (diamond). parameters for the flotation of galena, chalcocite and sphalerite with the aromatic chelate collectors MBT, MBO and ATP.
This study shows that dithionite suppresses galena oxidation and Pb contamination of sphalerite and suggests that improved selective flotation of galena against sphalerite may be achieved using dithionite. However, formation of lead sulphite on galena, which hinders xanthate adsorption on galena, needs to be controlled.
In this study, selective adsorption mechanism of zinc ions on the surfaces of galena and sphalerite in the flotation separation of Pb-Zn was comprehensively explored by flotation tests, Zeta potential measurements, Fourier transform interferometric radiometer (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS) analysis, and density functional …
Flotation has been extensively used to separate galena and sphalerite. Herein, a reagent scheme comprising aerofloat collectors and Zn 2+ and SO 3 2− …
In this work, an environment-friendly sphalerite depressant 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) was exploited in the flotation separation of sphalerite and galena. The flotation performances of sphalerite and galena treated by HEDP were investigated by mineral flotation tests.
This study examined the effect of PMIDA on the flotation behavior of sphalerite and galena and elucidated the selective depression mechanism of PMIDA on …
2-mercaptobenzothiazole and derivatives in the flotation of galena, chalcocite and sphalerite: A study of flotation, adsorption and microcalorimetry
The effect of HA on the flotation of galena and sphalerite were evaluated by micro-flotation tests. The depression mechanisms were investigated by adsorption capacity, Zeta potential and X-ray ...
Infrared attenuated total reflection spectrophotometry, UV data, microelectrophoresis and a Hallimond tube flotation cell have been used to investigate the effect of Pb(II) on the galena and sphalerite surface properties (hydrophobicity and charge of the surface), ethyl xanthate adsorption and ethyl xanthate adsorption kinetics in …
Micro-flotation studies with galena and lead-activated sphalerite were performed to determine the depressing effect of zinc sulfate on the flotation behavior of these minerals,
In this work, pectin was investigated as a non-toxic and eco-friendly sphalerite depressant in the flotation separation of galena and sphalerite. The …
Flotation is the most important method for recovering sphalerite, and it has attracted significant research attention worldwide. In this study to clarify the hotspots for phased research frontiers and research progress of sphalerite flotation technology in the last 20 years, 720 pieces of relevant academic literature were selected by using …
Semantic Scholar extracted view of "Selective bio-flotation of sphalerite from galena using mineral – adapted strains of Bacillus subtilis" by B. Vasanthakumar et al.
The results of galena flotation test in the CDR system are shown in Fig. 4. Fig. 4 Influence of pulp potential on flotability of galena This shows that in the depressing process, the flotation behavior of galena is similar to that of pyrite or sphalerite. However, in the reactivating process, the flotation behavior of galena is obviously ...
The flotation response of sphalerite is changed appreciably when activating agents are added to the system. An addition of 1x10 -5 mole per liter lead chloride is sufficient to …
The micro-flotation findings revealed that BN returned the stronger collecting power and higher selectivity than isobutyl xanthate during flotation separation of galena from sphalerite, and achieved their effective separation at …
To enhance the selective separation of galena and sphalerite from their mixture minerals, 2-hydroxyethyl dibutyldithiocarbamate (HEBTC) surfactant was synthesized and its first applications on the flotation of galena and …
Sphalerite is a common sulfide mineral, and xanthate is usually used as the collector of sphalerite flotation. In order to realize the simultaneous flotation of sphalerite- and zinc-containing oxide ores, in this paper, dodecylamine was used as the collector and sodium sulfide as the regulator to explore the flotation behavior of …
Ore mineral characteristics as rate-limiting factors in sphalerite flotation: Comparison of the mineral chemistry (iron and manganese content), grain size, and liberation ... The samples mainly consisted of sphalerite, pyrite, and galena, which were hosted in skarn-altered manganoan dolomitic marble.
The oxidation of, and interaction of xanthate and other reagents with, galena surfaces is discussed. The results of recent scanned microscopy investig…
Lecture 5 Flotation 1 CHAPTER 7– FLOTATION OF SULPHIDE MINERALS Contents: Xanthate adsorption. Oxidation reactions. Activation & depression. Flotation of chalcopyrite, galena, sphalerite, pyrite.
The flotation results demonstrate that Zn 2+ and SO 3 2− provide a synergistic depression effect on sphalerite and the aerofloat collectors exhibit more selectivity towards galena.
This series of events gives rise to hydrophilic species onto pyrite and depress its flotation, facilitating improved collector adsorption onto galena and …
The flotation results showed that collector with more nitrogen atoms (DPTZ) offered better selectivity for the flotation separation of galena from a galena/sphalerite mixed mineral system. Separation selectivity, FTIR and XPS studies showed, in the case that collector solution environment pH value < pK a value, N atoms did not participate in ...
The change of surface components of sulfide minerals during grinding is an important factor affecting the selective flotation separation of galena and sphalerite.
The flotation performance of TTBA on galena and sphalerite was investigated by micro-flotation experiments, and the flotation separation mechanism was studied by zeta potential, FTIR, XPS tests and DFT calculations.
A disaccharide unit glycosaminoglycan named hyaluronic acid (HA) was exploited as a novel sphalerite depressant in the flotation separation of Pb-Zn sulfides in this study. The effect of HA on the flotation of galena and sphalerite were evaluated by micro-flotation tests.
Semantic Scholar extracted view of "Effect of seawater on flotation separation of galena from sphalerite" by N. Song et al.
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